#include <iostream>
#include <string>
#include <pthread.h>
#include <unistd.h>

__thread int gval = 100;

std::string ToHex(pthread_t tid)
{
    char buffer[128];
    snprintf(buffer, sizeof(buffer), "0x%lx", tid);
    return buffer;
}
void *threadrun(void *args)
{
    std::string name = static_cast<const char *>(args);
    while (true)
    {
        std::cout << name << " is running...,tid: " << ToHex(pthread_self()) << " ,gval:" << gval << " ,&gval:" << &gval << std::endl;
        sleep(1);
        gval++;
    }
}
int main()
{
    pthread_t tid;
    pthread_create(&tid, nullptr, threadrun, (void *)"thread-1");

    while (true)
    {
        std::cout << "main thread running ,gval:" << gval << " ,&gval:" << &gval << std::endl;
        sleep(1);
    }

    pthread_join(tid, nullptr);
    return 0;
}